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Old 08-11-2015, 08:19 PM   #1
DBear
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60-66 4x4 Frames

Does anyone know if there are any differences in the 4x4 frames of these years? As far as what bodies will fit what frames...etc?
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Old 08-11-2015, 08:39 PM   #2
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Re: 60-66 4x4 Frames

60-62
63-66
67-72
73+
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Old 08-11-2015, 08:49 PM   #3
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Re: 60-66 4x4 Frames

Is there a vin # or partial on the frame to determine what year the frame is...or is there something obvious about the frame to determine what year it is?
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Old 08-11-2015, 09:00 PM   #4
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Re: 60-66 4x4 Frames

Quote:
Originally Posted by DBear View Post
Is there a vin # or partial on the frame to determine what year the frame is...or is there something obvious about the frame to determine what year it is?
why don't you just ask what you want.you must have something on your mind?
simplify it
there is something in the faq about frame dimensions inc thickness
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Old 08-11-2015, 09:30 PM   #5
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Re: 60-66 4x4 Frames

Well....I am buying a nice 63 big window cab and it has a 3/4 ton 4x4 frame that comes along. The cab is a 2wd cab. I do not know what year the frame is. Sorry if I was vague but wasn't trying to....I guess I can ramble sometimes
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Old 08-11-2015, 10:06 PM   #6
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Re: 60-66 4x4 Frames

Quote:
Originally Posted by DBear View Post
Well....I am buying a nice 63 big window cab and it has a 3/4 ton 4x4 frame that comes along. The cab is a 2wd cab. I do not know what year the frame is. Sorry if I was vague but wasn't trying to....I guess I can ramble sometimes
post a picture of it
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Old 08-11-2015, 10:22 PM   #7
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Re: 60-66 4x4 Frames

sorry....dont have a pic of the frame. Probably would be a couple of days till I would have some.
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Old 08-11-2015, 10:30 PM   #8
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Re: 60-66 4x4 Frames

Not sure if this helps, 64 K10 has last part of vehicle identification number stamped in frame top rail drivers side, above drag link. The first part of the ID number is not stamped which would be more helpful to you.

Les
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Old 08-11-2015, 10:58 PM   #9
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Re: 60-66 4x4 Frames

if it is a 63-66 frame , then the 63 cab will just bolt on, if it is a 60-62 frame then you need to drill a couple holes for the front cab mounts to work.
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Old 08-12-2015, 01:18 AM   #10
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Re: 60-66 4x4 Frames

The frame will have the VIN stamped on the top flange of the frame between the steering box and the engine mount on the drivers side. Then you will need to decode it to find out what year it is.
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Old 08-12-2015, 01:25 AM   #11
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Re: 60-66 4x4 Frames

The cabs are no different between 4x4 and 4x2. We can tell what year the frame is based on the crossmembers and body mount brackets.
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Old 08-12-2015, 06:30 AM   #12
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Re: 60-66 4x4 Frames

1960-62 K1000 frame GMC J-N Series



1960-63 K10 frame ( In 1964 the motor was no longer supported by the front crossmember.)
Rear shocks were mounted parallel to the frame in 64 as compared to the V style of the earlier years.
The drag link between the steering box and axle changed from a ball type setup inside a tube to a cast tie rod setup.

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Old 08-12-2015, 12:37 PM   #13
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Re: 60-66 4x4 Frames

beside the small differences my manual says 4x4 frames where the same as 1tons. latter type not x type frames like in 60-63
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Old 08-12-2015, 01:47 PM   #14
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Re: 60-66 4x4 Frames

1960-66 frame dimensions
Frame dimensions are as follows:
1963-66

½ ton 2WD: 6-1/32 x 2-1/2 x 5/32

¾ ton 2WD: 6-1/8 x 2-17/32 x 3/16

One ton 2WD: 8-1/8 x 2-13/16 x 3/16

½ ton 4WD 115” WB: 8-1/32 x 2-25/32 x 9/64

½ ton 4WD 127” WB: 8-1/8 x 2-13/16 x 3/16

¾ ton 4WD: 8-1/8 x 2-13/16 x 3/16

As you can see, even the ½ ton 4WD long bed uses the same size frame member
as the one ton 2WD.


1960-62 frame ,measurements

½ ton 2WD: 5-15/32 x 2-1/4 x 1/8
¾ ton 2WD: 7-3/16 x 2-3/4 x 3/16
½ and ¾ ton 4WD: 7-13/64 x 2-3/4 x 3/16
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Old 08-13-2015, 11:19 AM   #15
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Re: 60-66 4x4 Frames

thanks for all the info...I will try to get a pic and some measurements.
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Old 08-13-2015, 02:48 PM   #16
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Re: 60-66 4x4 Frames

The 60-62 K model frames had the single horseshoe motor mount, mount was in the front of the tubular cross-member for I6 trucks, the rear for V8 trucks. Mine was hacked so I had to fab one up. The GMC's had a plain cross-member and used the more conventional side mounts for their V6. Also at the rear of the frame they're mounts on the side of the frame to accommodate the wider rear bed sill on the 60-62. The rear shocks mount forward of the rear axle for 60-62 and 63-66 have one mounted forward and the other to the rear.
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Old 08-14-2015, 01:01 AM   #17
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Re: 60-66 4x4 Frames

Correction on the rear shock mounts. 60-62 are mounted off the spring pad, or maybe its the block, and tilted to the centerline of the chassis, like in the pic above. 63-66 they are mounted to the axle tube and both tilt forward.
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Old 10-03-2018, 09:24 AM   #18
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Re: 60-66 4x4 Frames

Quote:
Originally Posted by aerotruk63 View Post
1960-62 K1000 frame GMC J-N Series



1960-63 K10 frame ( In 1964 the motor was no longer supported by the front crossmember.)
Rear shocks were mounted parallel to the frame in 64 as compared to the V style of the earlier years.
The drag link between the steering box and axle changed from a ball type setup inside a tube to a cast tie rod setup.

hey aerotruck i have a question for you about this drawing and part number
60260 (the bracket that is most forward on the frame) where the heck would i find 2 of them
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Old 10-03-2018, 09:35 AM   #19
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Re: 60-66 4x4 Frames

I have 63-66 frame at home will be parting.
Headed to California back in 2 weeks.
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Old 10-03-2018, 12:17 PM   #20
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Re: 60-66 4x4 Frames

good information in this thread ...
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Old 09-09-2021, 06:43 PM   #21
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Re: 60-66 4x4 Frames

Thanks to everyone who commented here, this just answered all my questions on what 4x4 frame I have.
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